How many CVEs does zen-browser have?

zen-browser has 5 published CVE records since 2026, including 5 in the last two years.

How many zen-browser CVEs are in CISA KEV?

None of zen-browser's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which zen-browser products have the most CVEs?

The zen-browser products with the most published CVEs are desktop.

What are the most common weakness types in zen-browser CVEs?

zen-browser's CVEs most often map to these CWE weakness types: CWE-451 (User Interface (UI) Misrepresentation of Critical Information), CWE-20 (Improper Input Validation), CWE-266 (Incorrect Privilege Assignment), CWE-347 (Improper Verification of Cryptographic Signature).

Are there public exploits for zen-browser vulnerabilities?

Yes — 2 of zen-browser's CVEs have a known public exploit.

What is the average severity of zen-browser CVEs?

The average CVSS base score across zen-browser's scored CVEs is 4.5.

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5 CVEs

zen-browser Vulnerabilities

Name: zen-browser vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for zen-browser.

5

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

2

Public exploits

PoC or exploit code

4.5

Avg CVSS

2026–2026

Overview

zen-browser has 5 published CVE records since 2026, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 2 have a known public exploit. The average CVSS base score across scored CVEs is 4.5.

This page aggregates every publicly disclosed vulnerability (CVE) affecting zen-browser products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on zen-browser's vulnerability posture, as a share of its 5 published CVEs.

Average CVSS: 4.5
Critical / high: 20%
Actively exploited (KEV): 0%
Public exploit available: 40%
Patch available: 100%

Severity and exploitation

How the CVSS severity of zen-browser's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical0

High1

Medium2

Low2

In CISA’s Known Exploited Vulnerabilities catalog

0

None of zen-browser's CVEs are currently listed in CISA's KEV catalog.

Public exploits

2

2 of zen-browser's CVEs have a known public exploit available.

Most affected products

The zen-browser products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

desktop5 CVEs

Common weakness types

The CWE weakness categories most often found in zen-browser CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish zen-browser CVE records.

GitHub_M5 CVEs

Latest zen-browser CVEs

The most recently disclosed vulnerabilities affecting zen-browser.

Zen Browser - Missing Fullscreen Security Notification Allows Origin Spoofing
CWE-451
Medium · CVSS 6.3
EPSS 0.3%2026-07-15
Zen: Context-menu "Open link in glance" / "Split link in new tab" loads a page-controlled link with the System principal, bypassing the web-content scheme restriction
CWE-266
Low · CVSS 1.2
EPSS 0.3%2026-07-09
Zen Browser Mac - Address Bar Spoofing via Long Subdomain
CWE-451
Medium · CVSS 4.7
EPSS 0.2%2026-05-11
Zen Browser: RSS Live-Folder Item URLs Are Not Scheme-Restricted Before Trusted Tab Creation
CWE-20
Low · CVSS 2.4
EPSS 0.2%2026-05-11
Zen Browser MAR updater ships with signature verification removed — unsigned updates accepted
CWE-347
High · CVSS 8.0
EPSS 0.2%2026-05-11

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Frequently asked questions

Common questions about zen-browser vulnerabilities.

How many CVEs does zen-browser have?: zen-browser has 5 published CVE records since 2026, including 5 in the last two years.
How many zen-browser CVEs are in CISA KEV?: None of zen-browser's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which zen-browser products have the most CVEs?: The zen-browser products with the most published CVEs are desktop.
What are the most common weakness types in zen-browser CVEs?: zen-browser's CVEs most often map to these CWE weakness types: CWE-451 (User Interface (UI) Misrepresentation of Critical Information), CWE-20 (Improper Input Validation), CWE-266 (Incorrect Privilege Assignment), CWE-347 (Improper Verification of Cryptographic Signature).
Are there public exploits for zen-browser vulnerabilities?: Yes — 2 of zen-browser's CVEs have a known public exploit.
What is the average severity of zen-browser CVEs?: The average CVSS base score across zen-browser's scored CVEs is 4.5.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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